Table T17. Acronyms and units used for wireline logging tools.
Tool
Output
Tool name/explanation of output
Unit
APS
Accelerator Porosity Sonde

APLC Near array porosity (limestone calibrated) %

SIGF Formation capture cross section (f) Capture units

STOF Tool standoff (computed distance from borehole wall) in
DLL
Dual Laterolog

LLD Deep resistivity m

LLS Shallow resistivity m
DSI
Dipole Sonic Imager

DTCO Compressional wave delay time (t) ms/ft

DTSM Shear wave delay time (t) ms/ft

DTST Stoneley wave delay time (t) ms/ft
FMS
Formation MicroScanner

C1, C2 Orthogonal hole diameters in

P1AZ Pad 1 azimuth Degrees


Spatially oriented resistivity images of borehole wall
GPIT
General Purpose Inclinometer Tool

DEVI Hole deviation Degrees

HAZI Hole azimuth Degrees

Fx, Fy, Fz Earth's magnetic field (three orthogonal components) Degrees

Ax, Ay, Az Acceleration (three orthogonal components) m/s2
HLDT
Hostile Environment Litho-Density Tool

RHOB Bulk density (corrected) g/cm3

PEF Photoelectric effect b/e-

CALI Caliper (measure of borehole diameter) in

DRHO Bulk density correction g/cm3
HNGS
Hostile Environment Gamma Ray Sonde

HSGR Standard (total) gamma ray gAPI

HCGR Computed gamma ray (HSGR minus uranium contribution) gAPI

HFK Potassium wt%

HTHO Thorium ppm

HURA Uranium ppm
SGT
Scintillation Gamma Ray Tool

ECGR Environmentally corrected gamma ray gAPI
TAP
Temperature/Acceleration/Pressure tool °C, m/s2, psi
UBI
Ultrasonic Borehole Imager


Spatially oriented acoustic images of borehole wall


Acoustic arrival times and amplitude ms


Borehole diameter in


Borehole azimuth Degrees
WST
Well Seismic Tool


Acoustic arrival times ms